Journal
FRONTIERS IN CELL AND DEVELOPMENTAL BIOLOGY
Volume 11, Issue -, Pages -Publisher
FRONTIERS MEDIA SA
DOI: 10.3389/fcell.2023.1076736
Keywords
focused ion beam; 3D tissue ultrastructure; resin embedded; large samples; developing mammalian ovaries
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In this study, a new workflow is proposed that combines modified sample protocol of traditional transmission electron microscope with FIB-SEM volume imaging, enabling efficient 3D structural surveys of rabbit ovaries at consecutive developmental stages. The precise trimming of the region of interest adds a time dimension to the volume, constructing a virtual 4D electron microscopy. Filopodia-like processes emitted by oocyte cysts allowing contact between oocytes not previously observed were discovered.
Although the automated image acquisition with the focused ion beam scanning electron microscope (FIB-SEM) provides volume reconstructions, volume analysis of large samples remains challenging. Here, we present a workflow that combines a modified sample protocol of the classical transmission electron microscope with FIB-SEM volume imaging. The proposed workflow enables efficient 3D structural surveys of rabbit ovaries collected at consecutive developmental stages. The precise trimming of the region of interest adds the time dimension to the volume, constructing a virtual 4D electron microscopy. We found filopodia-like processes emitted by oocyte cysts allowing contact between oocytes not previously observed.
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